Specifications

 

 

Input Specifications — click here for sample calculations of typical sensor performance
 Sensor
temperature
coefficient
Input
range
Excitation
current
Display
resolution
Measurement
resolution
Electronic
accuracy (at 25 °C)
 Measurement  temperature coefficientElectronic
control
stability1
Diodenegative
0 V
to 2.5 V
10 µA
±0.05%2, 3
100 µV10 µV±80 µV ±0.005% of rdg (10 µV + 0.0005% of rdg)/°C ±20 µV
0 V
to 10 V
10 µA
±0.05%2, 3
1 mV20 µV±320 µV ±0.01% of rdg(20 µV + 0.0005% of rdg)/°C±40 µV
PTC RTD positive
0 Ω
to 10 Ω
1 mA4 1 mΩ0.2 mΩ±0.002 Ω ±0.01% of rdg(0.01 mΩ + 0.001% of rdg)/°C±0.4 mΩ
0 Ω
to 30 Ω
1 mA41 mΩ0.2 mΩ±0.002 Ω ±0.01% of rdg(0.03 mΩ + 0.001% of rdg)/°C±0.4 mΩ
0 Ω
to 100 Ω
1 mA410 mΩ2 mΩ±0.004 Ω ±0.01% of rdg(0.1 mΩ + 0.001% of rdg)/°C±4 mΩ
0 Ω
to 300 Ω
1 mA410 mΩ2 mΩ±0.004 Ω ±0.01% of rdg(0.3 mΩ + 0.001% of rdg)/°C±4 mΩ
0 Ω
to 1 kΩ
1 mA4100 mΩ20 mΩ±0.04 Ω ±0.02% of rdg(1 mΩ + 0.001% of rdg)/°C±40 mΩ
0 Ω
to 3 kΩ
1 mA4100 mΩ20 mΩ±0.04 Ω ±0.02% of rdg(3 mΩ + 0.001% of rdg)/°C±40 mΩ
0 Ω
to 10 kΩ
1 mA41 Ω200 mΩ±0.4 Ω ±0.02% of rdg(10 mΩ + 0.001% of rdg)/°C±400 mΩ
NTC RTD
10 mV
negative
0 Ω
to 10 Ω
1 mA41 mΩ0.15 mΩ±0.002 Ω ±0.06% of rdg(0.01 mΩ + 0.001% of rdg)/°C±0.3 mΩ
0 Ω
to 30 Ω
300 µA41 mΩ0.45 mΩ±0.002 Ω ±0.06% of rdg(0.03 mΩ + 0.0015% of rdg)/°C±0.9 mΩ
0 Ω
to 100 Ω
100 µA410 mΩ1.5 mΩ±0.01 Ω ±0.04% of rdg(0.1 mΩ + 0.001% of rdg)/°C±3 mΩ
0 Ω
to 300 Ω
30 µA410 mΩ4.5 mΩ±0.01 Ω ±0.04% of rdg(0.3 mΩ + 0.0015% of rdg)/°C±9 mΩ
0 Ω
to 1 kΩ
10 µA4100 mΩ15 mΩ + 0.002% of rdg±0.1 Ω ±0.04% of rdg(1 mΩ + 0.001% of rdg)/°C±30 mΩ ±0.004% of rdg
0 Ω
to 3 kΩ
3 µA4100 mΩ45 mΩ + 0.002% of rdg±0.1 Ω ±0.04% of rdg(3 mΩ + 0.0015% of rdg)/°C±90 mΩ ±0.004% of rdg
0 Ω
to 10 kΩ
1 µA41 Ω150 mΩ + 0.002% of rdg± 1.0 Ω ±0.04% of rdg(10 mΩ + 0.001% of rdg)/°C±300 mΩ ±0.004% of rdg
0 Ω
to 30 kΩ
300 nA41 Ω450 mΩ + 0.002% of rdg± 2.0 Ω ±0.04% of rdg(30 mΩ + 0.0015% of rdg)/°C±900 mΩ ±0.004% of rdg
0 Ω
to 100 kΩ
100 nA410 Ω1.5 Ω + 0.005% of rdg±10.0 Ω ±0.04% of rdg(100 mΩ + 0.002% of rdg)/°C±3 Ω ±0.01% of rdg
Thermocouple positive±50 mVNA1 µV0.4 µV±1 µV ±0.05% of rdg5(0.1 µV + 0.001% of rdg)/°C±0.8 µV
1 Control stability of the electronics only, in ideal thermal system
2 Current source error has negligible effect on measurement accuracy
3 Diode input excitation can be set to 1 mA
4 Current source error is removed during calibration
5 Accuracy specification does not include errors from room temperature compensation
 
Thermometry
Number of inputs 2

Input configuration

Inputs can be configured from the front panel to accept any of the supported input types. Thermocouple inputs require an optional input card that can be installed in the field. Once installed the thermocouple input can be selected from the front panel like any other input type.

Isolation

Sensor inputs optically isolated from other circuits but not each other

A/D resolution

24-bit

Input accuracy

Sensor dependent, refer to Input Specifications table

Measurement
resolution

Sensor dependent, refer to Input Specifications table

Maximum update rate

10 rdg/s on each input, 5 rdg/s when configured as 100 kΩ NTC RTD with reversal on

Autorange

Automatically selects appropriate NTC RTD or PTC RTD range

User curves

Room for 39 200-point CalCurves™ or user curves

SoftCal™

Improves accuracy of DT-470 diode to ±0.25 K from 30 K to 375 K; improves accuracy of platinum RTDs to ±0.25 K from 70 K to 325 K; stored as user curves

Math

Maximum and minimum

Filter

Averages 2 to 64 input readings
Sensor Input Configuration
Diode/RTD Thermocouple
Measurement type 4-lead differential 2-lead differential, room temperature compensated
Excitation Constant current with current reversal for RTDs NA
Supported
sensors
Diodes: Silicon, GaAlAs
RTDs: 100 Ω Platinum, 1000 Ω Platinum, Germanium, Carbon-Glass, Cernox®, and Rox™
Most thermocouple types
Standard
curves
DT-470, DT-670, DT-500D, DT-500-E1, PT-100, PT-1000, RX-102A, RX-202A
Type E, Type K, Type T, AuFe 0.07% vs. Cr,
AuFe 0.03% vs Cr,
Input
connector
6-pin DIN Screw terminals in a ceramic isothermal block
Control
Control outputs 2
Heater Outputs
Control type

Closed loop digital PID with manual heater output or open loop; warm up mode (output 2 only)
Update rate
10/s
Tuning
Autotune (one loop at a time), PID, PID zones
Control stability
Sensor dependent – see Input Specifications table
PID control parameters
    Proportional (gain) 0 to 1000 with 0.1 setting resolution
    Integral (reset) 1 to 1000 (1000/s) with 0.1 setting resolution
    Derivative (rate) 1 to 200% with 1% resolution
    Manual output
0 to 100% with 0.01% setting resolution
Zone control

10 temperature zones with P, I, D, manual heater out, heater range, control channel, ramp rate
Setpoint ramping 0.1 K/min to 100 K/min
Output 1
Type Variable DC current source
Control modes Closed loop digital PID with manual output or open loop
D/A resolution 16-bit
25 Ω setting 50 Ω setting
Max power 75 W*   50 W   50 W  
Max current 1.73 A 1.41 A 1 A
Voltage compliance (min) 43.3 V   35.4 V   50 V  
Heater load for max power 25 Ω 25 Ω 50 Ω  
Heater load range 10 Ω to 100 Ω
Ranges 3 (decade steps in power)
Heater noise 0.12 µA RMS (dominated by line frequency and its harmonics)
Heater connector Dual banana
Grounding Output referenced to chassis ground  
Safety limits Curve temperature, power up heater off, short circuit protection
*75 W only available when output 2 is in voltage mode
Output 2
Type Variable DC current source or voltage source
Current mode   Voltage mode
Control modes Closed loop digital PID with manual output, zone, open loop Closed loop digital PID with manual output, zone, open loop, warm up, monitor out
D/A resolution 15-bit 16-bit (bipolar)/15-bit (unipolar)
25 Ω setting 50 Ω setting NA
Max power 25 W 25 W 1 W  
Max current 1 A 0.71 A 100 mA
Voltage compliance (min) 25 V 35.4 V ±10 V  
Heater load for max power 25 Ω 50 Ω 100 Ω  
Heater load range 10 Ω to 100 Ω 100 Ω min (short circuit protected)
Ranges 3 (decade steps in power) NA
Heater noise 0.12 µA RMS 0.3 mV RMS
Heater connector Dual banana Detachable terminal block
Grounding Output referenced to chassis ground  
Safety limits Curve temperature, power up heater off, short circuit protection
Warm up heater mode settings (Output 2 voltage only)
    Warm up percentage0 to 100% with 1% resolution
    Warm up modeContinuous control or auto-off
Monitor output settings (Output 2 voltage only)
    ScaleUser selected
    Data sourceTemperature or sensor units
    SettingsInput, source, top of scale, bottom of scale, or manual
Update rate 10/s
Range±10 V
Resolution16-bit, 0.3 mV
Accuracy±2.5 mV
Noise0.3 mV RMS
Minimum load resistance100 Ω (short circuit protected)
ConnectorDetachable terminal block
Front Panel
 
Display

2- line by 20-character, 9 mm character height, vacuum fluorescent display
Number of reading displays
1 to 4
Display units
K, °C, V, mV, Ω
Reading source
Temperature, sensor units, max and min
Display update rate
2 rdg/s
Temp display
resolution
0.001° from 0° to 99.999°, 0.01° from 100° to 999.99°, 0.1° above 1000°
Sensor units display resolution
Sensor dependent, to 5 digits
Other displays

Sensor name, setpoint, heater range, heater output, and PID
Setpoint setting resolution
Same as display resolution
(actual resolution in sensor dependent)
Heater output display
Numeric display in percent of full scale for power or current
Heater output resolution
1%
Display annunciators
Control input, alarm, tuning
LED annunciators
Remote, alarm, control outputs
Keypad
25-key silicone elastomer keypad
Front panel features Front panel curve entry, display brightness control, and keypad lock-out
  
Interface
 
IEEE-488.2
    CapabilitiesSH1, AH1, T5, L4, SR1, RL1, PP0, DC1, DT0, C0, E1
    Reading rate To 10 rdg/s on each input
    Software support LabVIEW™ driver
USB
    Function Emulates a standard RS-232 serial port
    Baud rate57,600
    ConnectorB-type USB connector
    Reading rate To 10 rdgs/s on each input
    Software support LabVIEW™ driver
Special interface featuresModel 331/332 command emulation mode
Alarms
    Number2, high and low for each input
    Data source Temperature or sensor units
    Settings Source, high setpoint, low setpoint, deadband, latching or non-latching, audible on/off, and visible on/off
    ActuatorsDisplay annunciator, beeper, and relays
Relays
    Number 2
    ContactsNormally open (NO), normally closed (NC), and common (C)
    Contact rating30 VDC at 3 A
    OperationActivate relays on high, low, or both alarms for any input, or manual mode
    Connector Detachable terminal block
  
General
 
Ambient temperature
15 °C to 35 °C at rated accuracy, 5 °C to 40 °C at reduced accuracy
Power requirement
100, 120, 220, 240 VAC, ±10%, 50 or 60 Hz, 210 VA
Size

217 mm W × 90 mm H × 317 mm D
(8.5 in × 3.5 in × 14.5 in), half rack
Weight
5.1 kg (11.3 lb)
Approval CE mark, RoHS
  
 

 

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